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* Time zone problem in cygwin
@ 2009-02-05 14:47 Ken Brown
  2009-02-05 20:38 ` Eli Zaretskii
  0 siblings, 1 reply; 7+ messages in thread
From: Ken Brown @ 2009-02-05 14:47 UTC (permalink / raw)
  To: emacs-devel

I just built emacs 23 under cygwin from the cvs source of two days ago, 
and the time zone is off by 4 hours; display-time shows 1:30pm when the 
local time is 9:30am.  This happens under both cygwin 1.5 and the (still 
experimental) cygwin 1.7.  The problem does not occur in my build of 
emacs 22.3.  I see in the archives that this problem was reported before:

    http://lists.gnu.org/archive/html/emacs-devel/2008-11/msg00532.html

Eli Zaretskii replied and asked for the value of (format-time-string 
"%Y-%m-%d %T %z").   The OP never responded, but the answer for me is 
the following:  emacs 23 incorrectly reports 2009-02-05 13:35:36 -0100, 
whereas emacs 22.3 correctly gives 2009-02-05 09:36:13 -0500 a few 
seconds later.  One further detail:  emacs 23 gives the right time if I 
set TZ=America/New_York prior to starting emacs; but my understanding is 
that it's not supposed to be necessary to set TZ.

Ken





^ permalink raw reply	[flat|nested] 7+ messages in thread
* Re: Time zone problem in cygwin
@ 2009-02-06 16:29 Angelo Graziosi
  2009-02-06 16:50 ` Ken Brown
  2009-02-06 17:40 ` Ken Brown
  0 siblings, 2 replies; 7+ messages in thread
From: Angelo Graziosi @ 2009-02-06 16:29 UTC (permalink / raw)
  To: kbrown; +Cc: emacs-devel

Ken Brown wrote:
> ...and the time zone is off by 4 hours

Does it make any difference, if you build Emacs with/without this patch:

-----------------
diff -Naur emacs.orig/src/strftime.c emacs/src/strftime.c
--- emacs.orig/src/strftime.c   2007-01-14 04:24:37.000000000 +0100
+++ emacs/src/strftime.c        2008-11-27 09:42:03.109375000 +0100
@@ -54,7 +54,7 @@
  # endif
  #endif
  #if HAVE_TZNAME
-#ifndef USE_CRT_DLL
+#if !defined (USE_CRT_DLL) && !defined (CYGWIN)
  extern char *tzname[];
  #endif
  #endif
-----------------

In my case (I build 'with') the difference is 2 hours:

Emacs says that are 3.22 PM, instead they are 17:22. If Emacs has to
print the Greenwich Time, then it should be 16.22 (but perhaps I haven't
understood how time works...)

Cheers,
    Angelo.





^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2009-02-06 17:40 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-02-05 14:47 Time zone problem in cygwin Ken Brown
2009-02-05 20:38 ` Eli Zaretskii
2009-02-05 22:36   ` Ken Brown
2009-02-06  6:24     ` Eli Zaretskii
  -- strict thread matches above, loose matches on Subject: below --
2009-02-06 16:29 Angelo Graziosi
2009-02-06 16:50 ` Ken Brown
2009-02-06 17:40 ` Ken Brown

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